If it's a wooden top.... Oh dear...
But if it's a normal work top (Formica or whatever it's called), it might be that the area is stained with tea/grime, and the Powerburst has simply "Cleaned" the area. (This has happened to me when I cleaned an oven once, she was delighted at how clean I got the rest of her work top though
May I suggest that you invest in an in-line sprayer, and make batches of 5 litre bottles of pre-spray up at home. I mix 250 grams up per 5 litres of either SPM or Powerburst up and use the in-line sprayer at a ratio of 4-1.... It's "Uncle Ben's" mate.... perfect results, every time